#include<stdio.h>

struct person
{
	int num;
	char name[20];
	char tp;
	union
	{
		int inclass;
		char position[10];
	}job;
	//sizeof(job) ->12
}p[2];

int main()
{
	printf("%d",sizeof(struct p)); //80 = 2*(4+20+4 +12)


	return 0;
}
